[FFmpeg-user] How to change FPS without re-render

[loeffler at eyetrap.net]

The problem was actually that there was a second stream that was much  
longer than the video stream and messed with the fps.

Thanks for the suggestions
Markus


Quoting Christoph Gerstbauer <christophgerstbauer at gmail.com>:

> Hello, you want to speed down 24fps to 23.976 fps?
>
> I always need to speed up 23.976fps material to 25fps (PAL):
> I use this videofilter:
>
> -vf "setpts=0.95904*PTS" -r 25
> (23.976/25=0.95904)
>
> So maybe for your case this should work:
> (24/23.976=1.001001001001)
>
> -vf "setpts=1.001001001001*PTS" -r 23.976
>
> But this only works with reencoding. But if you transcode from apple  
> pro res to apple pro res the quality loss should be very small.
>
> best regards
> Christoph
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